ZnO基材料在光催化降解有机污染物中的应用  

Application of ZnO-based materials in photocatalyticdegradation of organic pollutants

作　　者：冯效迁 赵艺霖 张启俭[1] 赵永华[1] 王欢[1] 孟庆润 FENG Xiaoqian;ZHAO Yilin;Zhang Qijian;ZHAO Yonghua;WANG Huan;MENG Qingrun(School of Chemical and Environmental Engineering,Liaoning University of Technology,Jinzhou 121001,China)

机构地区：[1]辽宁工业大学化学与环境工程学院,辽宁锦州121001

出　　处：《功能材料》2023年第10期10039-10045,10057,共8页Journal of Functional Materials

基　　金：国家自然科学基金项目(22202095);辽宁省教育厅科学研究经费项目(LJKZ0614)。

摘　　要：有机污染物是水污染问题的重要来源,其排放前的无害化处理十分必要。光催化降解具有反应条件温和、高效、适用范围广等优点,近年来受到研究人员的广泛关注。ZnO是一种廉价、稳定、无毒的半导体材料,是较为理想的光催化剂,但禁带宽度较大、光生载流子易复合等问题限制了其应用。通过对ZnO进行合理修饰可以有效提高其光吸收范围,促进光生载流子的分离,进而有利于更多关键中间氧化物种的形成,提升其光催化效率。从修饰方法的角度出发,从元素掺杂、形成异质结和形貌设计三个方面,对近年来ZnO基光催化剂的设计及其在光催化降解有机污染物方面的应用研究成果进行全面综述。Organic pollutants are an important source of water pollution,and their harmless treatment is necessary before discharge.Photocatalytic degradation has attracted extensive attention in recent years due to its mild reaction conditions,high efficiency and wide application range.ZnO is a cheap,stable and non-toxic semiconductor material,which is an ideal photocatalyst.However,its application is limited by the large band gap and easy recombination of photogenerated carriers.Reasonable modification can effectively improve ZnO s light absorption range,promote the separation of photogenerated carriers,and further facilitate the formation of more key intermediate oxidant species and improve its photocatalytic efficiency.In this paper,the design of ZnO-based photocatalyst and its application in photocatalytic degradation of organic pollutants in recent years are reviewed from the perspective of modification methods,including element doping,heterojunction formation and morphology design.

关 键 词：ZNO 光催化降解 元素掺杂 异质结 形貌设计 

分 类 号：TB332[一般工业技术—材料科学与工程]